《素问·异法方宜论》里,有西北地处高寒,风寒冰冽之说,影响后世认为东南湿热盛,西北风寒多;而对“西方者……其民华食而脂肥,故邪不能伤其形体,其病生于内。”“北方者……其民乐野处而乳食,藏寒生满病”的牛羊脂肥野处乳食易生内湿未予足够重视。张景岳曾 In the question of “Plainness, Difference, and Side-by-Stage Theory,” Northwestern China is located in the alpine region, where the wind is cold and hazy. It affects later generations that the southeast heats up and the northwest winds cold; while for the Westerners... Therefore, the evil can not injure its form and its disease is born in it.” “The people in the northern region ... their livelihood and eating milk, and eating cold and full of disease” are not paid enough attention to the fact that the fat and the fat in the wild are vulnerable . Zhang Jingyue Zeng